Luke 11:37-38

³⁷While Jesus finished saying those things, a Pharisee invited him to eat a meal with him. So Jesus went to his house and ate with him.

³⁸The Pharisee was surprised when he saw that Jesus did not follow the Pharisees' ritual by washing his hands before eating. The Pharisees washed their hands in a certain way to be cleansed from anything that might have contaminated them. They were afraid that God might reject them if they had touched something unacceptable to God.